El ColegiadoData on refereeing in the Liga

Hernández Hernández × Sergio Busquets

21 matches of Sergio Busquets (FC Barcelona) refereed by Alejandro José Hernández Hernández, from 2013-14 to 2021-22.

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Player data: 2000-01 → 2021-22 only. Player-level match sheets come from Zenodo (BeSoccer, CC BY-NC 4.0 licence, non-commercial use). No free source provides them after 2021-22: more recent matches are not counted here. Penalties conceded are not attributed to players in the source, so they are not analysed.

In short

Hernández Hernández refereed 21 Liga matches in which Sergio Busquets took part, from 2013-14 to 2021-22: 1,682 minutes played, 6 yellow cards and 0 red cards. With the other referees, over the same seasons (281 matches, 22,430 minutes), Sergio Busquets receives 0.31 yellow cards per 90 minutes, against 0.32 with Hernández Hernández.

Verdict: no clear difference with the other referees.

Cards are rare (less than one per player per match): over a few dozen matches, only a very large deviation can be told apart from chance. "No clear difference" does not mean "no effect".

Matches

21

20 starts · 1,682 minutes · 9 seasons

Yellow cards

6for 5.5 expected

0.32 per 90 minutes with this referee · 0.31 with the others

no clear difference

Red cards

0for 0.0 expected

0.00 per 90 minutes with this referee · 0.00 with the others

no clear difference
For experts: statistical tests and method

Permutation test stratified by season: within each season, the player's matches given to this referee are drawn again at random among all the player's matches (same number per season). Deviation = (observed − expected cards) per 90 minutes played with this referee; positive = more cards than expected. q: Benjamini-Hochberg correction over the 3,781 pairs with at least 10 matches, separately for yellows and reds.

MeasureObservedExpectedDeviation / 90 minpqVerdict
Yellow cards65.54+0.0250.761.00no clear difference
Red cards00.000.0001.001.00no clear difference

The 21 matches

Minutes played and cards received by Sergio Busquets in each match refereed by Hernández Hernández.

DateMatchTeamMinutesYellowsReds
8 Mar 2014Real Valladolid 1-0 FC BarcelonaFC Barcelona0′ → 90′00
24 Sept 2014Málaga CF 0-0 FC BarcelonaFC Barcelona0′ → 90′00
14 Feb 2016FC Barcelona 6-1 RC Celta de VigoFC Barcelona0′ → 90′00
2 Apr 2016FC Barcelona 1-2 Real Madrid CFFC Barcelona0′ → 90′00
14 May 2016Granada CF 0-3 FC BarcelonaFC Barcelona0′ → 88′10
19 Mar 2017FC Barcelona 4-2 Valencia CFFC Barcelona0′ → 90′00
23 Apr 2017Real Madrid CF 2-3 FC BarcelonaFC Barcelona0′ → 90′00
21 May 2017FC Barcelona 4-2 SD EibarFC Barcelona0′ → 90′10
19 Sept 2017FC Barcelona 6-1 SD EibarFC Barcelona0′ → 65′00
17 Feb 2018SD Eibar 0-2 FC BarcelonaFC Barcelona0′ → 90′00
6 May 2018FC Barcelona 2-2 Real Madrid CFFC Barcelona0′ → 90′00
3 Nov 2018Rayo Vallecano 2-3 FC BarcelonaFC Barcelona0′ → 90′00
2 Apr 2019Villarreal CF 4-4 FC BarcelonaFC Barcelona0′ → 73′10
2 Nov 2019Levante UD 3-1 FC BarcelonaFC Barcelona↑ 64′ → 90′00
30 Jun 2020FC Barcelona 2-2 Atlético MadridFC Barcelona0′ → 85′00
31 Oct 2020Deportivo Alavés 1-1 FC BarcelonaFC Barcelona0′ → 46′10
19 Dec 2020FC Barcelona 2-2 Valencia CFFC Barcelona0′ → 46′00
27 Feb 2021Sevilla FC 0-2 FC BarcelonaFC Barcelona0′ → 90′00
15 Aug 2021FC Barcelona 4-2 Real SociedadFC Barcelona0′ → 83′10
6 Nov 2021RC Celta de Vigo 3-3 FC BarcelonaFC Barcelona0′ → 90′10
13 Feb 2022RCD Espanyol 2-2 FC BarcelonaFC Barcelona0′ → 90′00

↑: came on as a substitute. Stoppage time is not recorded in the source: minutes stop at 90.

Sergio Busquets with other referees